Below the Surface
Below the Surface was a series of articles which appeared throughout Wonders of World Engineering. Here is a complete list, with links to the relevant articles.
- The Mersey Tunnel
- The First Thames Tunnel
- Tunnelling the Hudson
- Subterranean London
- Conquest of the Severn (The Severn Tunnel)
- British Empire’s Longest Tunnel (The Otira Tunnel)
- Tunnels Under Glasgow
- A Canal Through a Mountain -
(The Rove Tunnel) - London’s Underground Railways
- Alpine Tunnels